Java算法——二维数组的遍历，求和

public class Array2BianLi {

	public static void main(String[] args) {

		int[][] arr = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };

		int sum = 0;
		System.out.println("遍历二维数组：");

		for (int i = 0; i < arr.length; i++) {
			for (int j = 0; j < arr[i].length; j++) {
				System.out.print(arr[i][j] + " ");
				sum += arr[i][j];
			}
			System.out.println();
		}
		System.out.println("所有元素总和为：" + sum);
	}

}